1 /* SPDX-License-Identifier: GPL-2.0-or-later * <<
2 /* 1 /*
3 * (C) Copyright David Gibson <dwg@au1.ibm.com> 2 * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
>> 3 *
>> 4 *
>> 5 * This program is free software; you can redistribute it and/or
>> 6 * modify it under the terms of the GNU General Public License as
>> 7 * published by the Free Software Foundation; either version 2 of the
>> 8 * License, or (at your option) any later version.
>> 9 *
>> 10 * This program is distributed in the hope that it will be useful,
>> 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
>> 13 * General Public License for more details.
>> 14 *
>> 15 * You should have received a copy of the GNU General Public License
>> 16 * along with this program; if not, write to the Free Software
>> 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
>> 18 * USA
4 */ 19 */
5 20
6 %option noyywrap nounput noinput never-interac 21 %option noyywrap nounput noinput never-interactive
7 22
8 %x BYTESTRING 23 %x BYTESTRING
9 %x PROPNODENAME 24 %x PROPNODENAME
10 %s V1 25 %s V1
11 26
12 PROPNODECHAR [a-zA-Z0-9,._+*#?@-] 27 PROPNODECHAR [a-zA-Z0-9,._+*#?@-]
13 PATHCHAR ({PROPNODECHAR}|[/]) 28 PATHCHAR ({PROPNODECHAR}|[/])
14 LABEL [a-zA-Z_][a-zA-Z0-9_]* 29 LABEL [a-zA-Z_][a-zA-Z0-9_]*
15 STRING \"([^\\"]|\\.)*\" 30 STRING \"([^\\"]|\\.)*\"
16 CHAR_LITERAL '([^']|\\')*' 31 CHAR_LITERAL '([^']|\\')*'
17 WS [[:space:]] 32 WS [[:space:]]
18 COMMENT "/*"([^*]|\*+[^*/])*\*+"/" 33 COMMENT "/*"([^*]|\*+[^*/])*\*+"/"
19 LINECOMMENT "//".*\n 34 LINECOMMENT "//".*\n
20 35
21 %{ 36 %{
22 #include "dtc.h" 37 #include "dtc.h"
23 #include "srcpos.h" 38 #include "srcpos.h"
24 #include "dtc-parser.tab.h" 39 #include "dtc-parser.tab.h"
25 40
26 extern bool treesource_error; 41 extern bool treesource_error;
27 42
28 /* CAUTION: this will stop working if we ever 43 /* CAUTION: this will stop working if we ever use yyless() or yyunput() */
29 #define YY_USER_ACTION \ 44 #define YY_USER_ACTION \
30 { \ 45 { \
31 srcpos_update(&yylloc, yytext, 46 srcpos_update(&yylloc, yytext, yyleng); \
32 } 47 }
33 48
34 /*#define LEXDEBUG 1*/ 49 /*#define LEXDEBUG 1*/
35 50
36 #ifdef LEXDEBUG 51 #ifdef LEXDEBUG
37 #define DPRINT(fmt, ...) fprintf(stderr 52 #define DPRINT(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
38 #else 53 #else
39 #define DPRINT(fmt, ...) do { } while ( 54 #define DPRINT(fmt, ...) do { } while (0)
40 #endif 55 #endif
41 56
42 static int dts_version = 1; 57 static int dts_version = 1;
43 58
44 #define BEGIN_DEFAULT() DPRINT("<V1>\n 59 #define BEGIN_DEFAULT() DPRINT("<V1>\n"); \
45 BEGIN(V1); \ 60 BEGIN(V1); \
46 61
47 static void push_input_file(const char *filena 62 static void push_input_file(const char *filename);
48 static bool pop_input_file(void); 63 static bool pop_input_file(void);
49 static void PRINTF(1, 2) lexical_error(const c !! 64 static void lexical_error(const char *fmt, ...);
50 <<
51 %} 65 %}
52 66
53 %% 67 %%
54 <*>"/include/"{WS}*{STRING} { 68 <*>"/include/"{WS}*{STRING} {
55 char *name = strchr(yy 69 char *name = strchr(yytext, '\"') + 1;
56 yytext[yyleng-1] = '\0 70 yytext[yyleng-1] = '\0';
57 push_input_file(name); 71 push_input_file(name);
58 } 72 }
59 73
60 <*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t] !! 74 <*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t]+[0-9]+)? {
61 char *line, *fnstart, !! 75 char *line, *tmp, *fn;
62 struct data fn; <<
63 /* skip text before li 76 /* skip text before line # */
64 line = yytext; 77 line = yytext;
65 while (!isdigit((unsig 78 while (!isdigit((unsigned char)*line))
66 line++; 79 line++;
67 !! 80 /* skip digits in line # */
68 /* regexp ensures that !! 81 tmp = line;
69 * in the whole yytext !! 82 while (!isspace((unsigned char)*tmp))
70 * beginning and end o !! 83 tmp++;
71 fnstart = memchr(yytex !! 84 /* "NULL"-terminate line # */
72 for (fnend = yytext + !! 85 *tmp = '\0';
73 *fnend != '"'; fn !! 86 /* start of filename */
74 ; !! 87 fn = strchr(tmp + 1, '"') + 1;
75 assert(fnstart && fnen !! 88 /* strip trailing " from filename */
76 !! 89 tmp = strchr(fn, '"');
77 fn = data_copy_escape_ !! 90 *tmp = 0;
78 <<
79 <<
80 /* Don't allow nuls in <<
81 if (memchr(fn.val, '\0 <<
82 lexical_error( <<
83 <<
84 /* -1 since #line is t 91 /* -1 since #line is the number of the next line */
85 srcpos_set_line(xstrdu !! 92 srcpos_set_line(xstrdup(fn), atoi(line) - 1);
86 data_free(fn); <<
87 } 93 }
88 94
89 <*><<EOF>> { 95 <*><<EOF>> {
90 if (!pop_input_file()) 96 if (!pop_input_file()) {
91 yyterminate(); 97 yyterminate();
92 } 98 }
93 } 99 }
94 100
95 <*>{STRING} { 101 <*>{STRING} {
96 DPRINT("String: %s\n", 102 DPRINT("String: %s\n", yytext);
97 yylval.data = data_cop 103 yylval.data = data_copy_escape_string(yytext+1,
98 yyleng 104 yyleng-2);
99 return DT_STRING; 105 return DT_STRING;
100 } 106 }
101 107
102 <*>"/dts-v1/" { 108 <*>"/dts-v1/" {
103 DPRINT("Keyword: /dts- 109 DPRINT("Keyword: /dts-v1/\n");
104 dts_version = 1; 110 dts_version = 1;
105 BEGIN_DEFAULT(); 111 BEGIN_DEFAULT();
106 return DT_V1; 112 return DT_V1;
107 } 113 }
108 114
109 <*>"/plugin/" { <<
110 DPRINT("Keyword: /plug <<
111 return DT_PLUGIN; <<
112 } <<
113 <<
114 <*>"/memreserve/" { 115 <*>"/memreserve/" {
115 DPRINT("Keyword: /memr 116 DPRINT("Keyword: /memreserve/\n");
116 BEGIN_DEFAULT(); 117 BEGIN_DEFAULT();
117 return DT_MEMRESERVE; 118 return DT_MEMRESERVE;
118 } 119 }
119 120
120 <*>"/bits/" { 121 <*>"/bits/" {
121 DPRINT("Keyword: /bits 122 DPRINT("Keyword: /bits/\n");
122 BEGIN_DEFAULT(); 123 BEGIN_DEFAULT();
123 return DT_BITS; 124 return DT_BITS;
124 } 125 }
125 126
126 <*>"/delete-property/" { 127 <*>"/delete-property/" {
127 DPRINT("Keyword: /dele 128 DPRINT("Keyword: /delete-property/\n");
128 DPRINT("<PROPNODENAME> 129 DPRINT("<PROPNODENAME>\n");
129 BEGIN(PROPNODENAME); 130 BEGIN(PROPNODENAME);
130 return DT_DEL_PROP; 131 return DT_DEL_PROP;
131 } 132 }
132 133
133 <*>"/delete-node/" { 134 <*>"/delete-node/" {
134 DPRINT("Keyword: /dele 135 DPRINT("Keyword: /delete-node/\n");
135 DPRINT("<PROPNODENAME> 136 DPRINT("<PROPNODENAME>\n");
136 BEGIN(PROPNODENAME); 137 BEGIN(PROPNODENAME);
137 return DT_DEL_NODE; 138 return DT_DEL_NODE;
138 } 139 }
139 140
140 <*>"/omit-if-no-ref/" { <<
141 DPRINT("Keyword: /omit <<
142 DPRINT("<PROPNODENAME> <<
143 BEGIN(PROPNODENAME); <<
144 return DT_OMIT_NO_REF; <<
145 } <<
146 <<
147 <*>{LABEL}: { 141 <*>{LABEL}: {
148 DPRINT("Label: %s\n", 142 DPRINT("Label: %s\n", yytext);
149 yylval.labelref = xstr 143 yylval.labelref = xstrdup(yytext);
150 yylval.labelref[yyleng 144 yylval.labelref[yyleng-1] = '\0';
151 return DT_LABEL; 145 return DT_LABEL;
152 } 146 }
153 147
154 <V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? 148 <V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? {
155 char *e; 149 char *e;
156 DPRINT("Integer Litera 150 DPRINT("Integer Literal: '%s'\n", yytext);
157 151
158 errno = 0; 152 errno = 0;
159 yylval.integer = strto 153 yylval.integer = strtoull(yytext, &e, 0);
160 154
161 if (*e && e[strspn(e, !! 155 assert(!(*e) || !e[strspn(e, "UL")]);
162 lexical_error( <<
163 <<
164 } <<
165 156
166 if (errno == ERANGE) 157 if (errno == ERANGE)
167 lexical_error( 158 lexical_error("Integer literal '%s' out of range",
168 159 yytext);
169 else 160 else
170 /* ERANGE is t 161 /* ERANGE is the only strtoull error triggerable
171 * by strings 162 * by strings matching the pattern */
172 assert(errno = 163 assert(errno == 0);
173 return DT_LITERAL; 164 return DT_LITERAL;
174 } 165 }
175 166
176 <*>{CHAR_LITERAL} { 167 <*>{CHAR_LITERAL} {
177 struct data d; 168 struct data d;
178 DPRINT("Character lite 169 DPRINT("Character literal: %s\n", yytext);
179 170
180 d = data_copy_escape_s 171 d = data_copy_escape_string(yytext+1, yyleng-2);
181 if (d.len == 1) { 172 if (d.len == 1) {
182 lexical_error( 173 lexical_error("Empty character literal");
183 yylval.integer 174 yylval.integer = 0;
184 } else { !! 175 return DT_CHAR_LITERAL;
185 yylval.integer <<
186 <<
187 if (d.len > 2) <<
188 lexica <<
189 <<
190 <<
191 } 176 }
192 177
193 data_free(d); !! 178 yylval.integer = (unsigned char)d.val[0];
>> 179
>> 180 if (d.len > 2)
>> 181 lexical_error("Character literal has %d"
>> 182 " characters instead of 1",
>> 183 d.len - 1);
>> 184
194 return DT_CHAR_LITERAL 185 return DT_CHAR_LITERAL;
195 } 186 }
196 187
197 <*>\&{LABEL} { /* label reference */ 188 <*>\&{LABEL} { /* label reference */
198 DPRINT("Ref: %s\n", yy 189 DPRINT("Ref: %s\n", yytext+1);
199 yylval.labelref = xstr 190 yylval.labelref = xstrdup(yytext+1);
200 return DT_LABEL_REF; !! 191 return DT_REF;
201 } 192 }
202 193
203 <*>"&{"{PATHCHAR}*\} { /* new-style p !! 194 <*>"&{/"{PATHCHAR}*\} { /* new-style path reference */
204 yytext[yyleng-1] = '\0 195 yytext[yyleng-1] = '\0';
205 DPRINT("Ref: %s\n", yy 196 DPRINT("Ref: %s\n", yytext+2);
206 yylval.labelref = xstr 197 yylval.labelref = xstrdup(yytext+2);
207 return DT_PATH_REF; !! 198 return DT_REF;
208 } 199 }
209 200
210 <BYTESTRING>[0-9a-fA-F]{2} { 201 <BYTESTRING>[0-9a-fA-F]{2} {
211 yylval.byte = strtol(y 202 yylval.byte = strtol(yytext, NULL, 16);
212 DPRINT("Byte: %02x\n", 203 DPRINT("Byte: %02x\n", (int)yylval.byte);
213 return DT_BYTE; 204 return DT_BYTE;
214 } 205 }
215 206
216 <BYTESTRING>"]" { 207 <BYTESTRING>"]" {
217 DPRINT("/BYTESTRING\n" 208 DPRINT("/BYTESTRING\n");
218 BEGIN_DEFAULT(); 209 BEGIN_DEFAULT();
219 return ']'; 210 return ']';
220 } 211 }
221 212
222 <PROPNODENAME>\\?{PROPNODECHAR}+ { 213 <PROPNODENAME>\\?{PROPNODECHAR}+ {
223 DPRINT("PropNodeName: 214 DPRINT("PropNodeName: %s\n", yytext);
224 yylval.propnodename = 215 yylval.propnodename = xstrdup((yytext[0] == '\\') ?
225 216 yytext + 1 : yytext);
226 BEGIN_DEFAULT(); 217 BEGIN_DEFAULT();
227 return DT_PROPNODENAME 218 return DT_PROPNODENAME;
228 } 219 }
229 220
230 "/incbin/" { 221 "/incbin/" {
231 DPRINT("Binary Include 222 DPRINT("Binary Include\n");
232 return DT_INCBIN; 223 return DT_INCBIN;
233 } 224 }
234 225
235 <*>{WS}+ /* eat whitespace */ 226 <*>{WS}+ /* eat whitespace */
236 <*>{COMMENT}+ /* eat C-style comments */ 227 <*>{COMMENT}+ /* eat C-style comments */
237 <*>{LINECOMMENT}+ /* eat C++-style comments */ 228 <*>{LINECOMMENT}+ /* eat C++-style comments */
238 229
239 <*>"<<" { return DT_LSHIFT; }; 230 <*>"<<" { return DT_LSHIFT; };
240 <*>">>" { return DT_RSHIFT; }; 231 <*>">>" { return DT_RSHIFT; };
241 <*>"<=" { return DT_LE; }; 232 <*>"<=" { return DT_LE; };
242 <*>">=" { return DT_GE; }; 233 <*>">=" { return DT_GE; };
243 <*>"==" { return DT_EQ; }; 234 <*>"==" { return DT_EQ; };
244 <*>"!=" { return DT_NE; }; 235 <*>"!=" { return DT_NE; };
245 <*>"&&" { return DT_AND; }; 236 <*>"&&" { return DT_AND; };
246 <*>"||" { return DT_OR; }; 237 <*>"||" { return DT_OR; };
247 238
248 <*>. { 239 <*>. {
249 DPRINT("Char: %c (\\x% 240 DPRINT("Char: %c (\\x%02x)\n", yytext[0],
250 (unsigned)yyte 241 (unsigned)yytext[0]);
251 if (yytext[0] == '[') 242 if (yytext[0] == '[') {
252 DPRINT("<BYTES 243 DPRINT("<BYTESTRING>\n");
253 BEGIN(BYTESTRI 244 BEGIN(BYTESTRING);
254 } 245 }
255 if ((yytext[0] == '{') 246 if ((yytext[0] == '{')
256 || (yytext[0] == ' 247 || (yytext[0] == ';')) {
257 DPRINT("<PROPN 248 DPRINT("<PROPNODENAME>\n");
258 BEGIN(PROPNODE 249 BEGIN(PROPNODENAME);
259 } 250 }
260 return yytext[0]; 251 return yytext[0];
261 } 252 }
262 253
263 %% 254 %%
264 255
265 static void push_input_file(const char *filena 256 static void push_input_file(const char *filename)
266 { 257 {
267 assert(filename); 258 assert(filename);
268 259
269 srcfile_push(filename); 260 srcfile_push(filename);
270 261
271 yyin = current_srcfile->f; 262 yyin = current_srcfile->f;
272 263
273 yypush_buffer_state(yy_create_buffer(y 264 yypush_buffer_state(yy_create_buffer(yyin, YY_BUF_SIZE));
274 } 265 }
275 266
276 267
277 static bool pop_input_file(void) 268 static bool pop_input_file(void)
278 { 269 {
279 if (srcfile_pop() == 0) 270 if (srcfile_pop() == 0)
280 return false; 271 return false;
281 272
282 yypop_buffer_state(); 273 yypop_buffer_state();
283 yyin = current_srcfile->f; 274 yyin = current_srcfile->f;
284 275
285 return true; 276 return true;
286 } 277 }
287 278
288 static void lexical_error(const char *fmt, ... 279 static void lexical_error(const char *fmt, ...)
289 { 280 {
290 va_list ap; 281 va_list ap;
291 282
292 va_start(ap, fmt); 283 va_start(ap, fmt);
293 srcpos_verror(&yylloc, "Lexical error" 284 srcpos_verror(&yylloc, "Lexical error", fmt, ap);
294 va_end(ap); 285 va_end(ap);
295 286
296 treesource_error = true; 287 treesource_error = true;
297 } 288 }
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